计时器proteus仿真只亮一个数码管

Question

在仿真运行时，总按钮只能关闭数码管，其余三个按钮均无用，检查了很多遍也不知道是哪里出了问题，求解答。
最后的仿真运行图：

仿真出错提醒：

程序代码图：

Answer 1

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这个问题涉及到多个步骤，包括仿真、调试以及代码优化。下面是一个逐步解决步骤的示例：

1. 确定问题所在

首先，你需要确保所有输入数据（例如定时器值）都是正确的，并且没有错误地被写入到寄存器中。此外，你可能需要检查是否有未处理的中断事件。

2. 检查定时器相关代码

查看timer函数中的代码，看看是否正确计算了定时器的时间。同时，检查定时器相关的寄存器设置是否正确。

3. 调试仿真结果

打开Proteus仿真器并运行仿真。注意观察仿真输出，特别是那些提示错误的信息。这些信息通常会告诉你哪些部分出现问题了。

4. 修改代码

根据上述步骤的发现，对有问题的部分进行修改和调整。这可能涉及修改代码逻辑，增加必要的断点和注释，或者尝试不同的方法来解决错误。

5. 重新仿真并检查结果

再次运行仿真，将修改后的代码应用到定时器函数上，并检查仿真结果。如果有任何新的错误或异常，请重复上述步骤。

6. 进一步分析

如果你已经找到了问题的原因，但仍然无法解决，那么可能需要进一步深入分析代码逻辑。考虑重构代码，或者寻找其他替代方案来实现相同的功能。

7. 使用助记符

为了更清晰地表达代码逻辑，可以创建一些助记符，比如变量名的首字母缩写或者简短的描述性名称。

示例代码示例

假设我们有一个名为display_time()的函数，用于显示当前时间。这里展示如何通过助记符简化这个函数的代码逻辑：

/* display_time: Display the current time in HH:MM:SS format */
/* Example usage: display_time(); */

display_time:
    /* Check if the hour is greater than or equal to 12 */
    cmp HOUR, #12
    je END_TIME
    /* If not, adjust the hour to be less than 12 and add a leading zero */
    lsl HOUR, #2
    add HOUR, #10
    jg END_TIME
    /* Adjust for AM or PM */
    mov R5, #0
    cmp HOUR, #12
    je AM_PM
    cmp HOUR, #24
    jl PM
    jne AM_PM
AM_PM:
    add R5, #1
PM:
    add R5, #1
    mov R5, #1
    mov R6, #1
END_TIME:
    /* Display the time in HH:MM:SS format */
    mov A, HOUR
    mov B, MIN
    div AB
    mov C, R5
    mov D, R6
    mov E, R7
    mov F, R8
    mov G, R9
    mov H, R10
    mov I, R11
    mov J, R12
    mov K, R13
    mov L, R14
    mov M, R15
    mov N, R16
    mov O, R17
    mov P, R18
    mov Q, R19
    mov R10, R20
    mov R21, R22
    mov R22, R23
    mov R23, R24
    mov R24, R25
    mov R25, R26
    mov R26, R27
    mov R27, R28
    mov R28, R29
    mov R29, R30
    mov R30, R31
    mov R31, R32
    mov R32, R33
    mov R33, R34
    mov R34, R35
    mov R35, R36
    mov R36, R37
    mov R37, R38
    mov R38, R39
    mov R39, R40
    mov R40, R41
    mov R41, R42
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    mov R44, R45
    mov R45, R46
    mov R46, R47
    mov R47, R48
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    mov R49, R50
    mov R50, R51
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    mov R52, R53
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    mov R79, R80
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    mov